Hi RenjainI see both you and planetstardragon are referring to CTA (CrazyTalk Animator) but I'm assuming by the error message you mean CrazyTalk 6 (CT6).
Unfortunately CrazyTalk 6 doesn not have autosave so this won't help in this case.
I'm not sure if the problem is happening to just one single project or happening to all projects but certainly I would advise you contact Technical Support using the link below. They will be able to help you try and resolve this issue.
http://www.reallusion.com/CustomerSupport/User/QForm.aspx